[PATCH 6/9] irq: make io_apic_set_pci_routing to take device

[PATCH 6/9] irq: make io_apic_set_pci_routing to take device

[Yinghai Lu]

Impact: so use dev_to_node later

Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Cc: linux-acpi@vger.kernel.org
Cc: Len Brown <lenb@kernel.org>
Cc: Bjorn Helgaas <bjorn.helgaas@hp.com>
Cc: linux-ia64@vger.kernel.org
Cc: Tony Luck <tony.luck@intel.com>

---
 arch/ia64/kernel/acpi.c        |    5 +++--
 arch/x86/include/asm/io_apic.h |    4 ++--
 arch/x86/include/asm/mpspec.h  |    4 +++-
 arch/x86/kernel/acpi/boot.c    |    8 ++++----
 arch/x86/kernel/apic/io_apic.c |    3 ++-
 drivers/acpi/pci_irq.c         |    5 +++--
 drivers/char/hpet.c            |    4 ++--
 drivers/pnp/pnpacpi/rsparser.c |    2 +-
 include/linux/acpi.h           |    2 +-
 9 files changed, 21 insertions(+), 16 deletions(-)

Index: linux-2.6/arch/ia64/kernel/acpi.c
===================================================================
--- linux-2.6.orig/arch/ia64/kernel/acpi.c
+++ linux-2.6/arch/ia64/kernel/acpi.c
@@ -636,7 +636,7 @@ void __init acpi_numa_arch_fixup(void)
  * success: return IRQ number (>=0)
  * failure: return < 0
  */
-int acpi_register_gsi(u32 gsi, int triggering, int polarity)
+int acpi_register_gsi(struct device *dev, u32 gsi, int triggering, int polarity)
 {
 	if (acpi_irq_model == ACPI_IRQ_MODEL_PLATFORM)
 		return gsi;
@@ -678,7 +678,8 @@ static int __init acpi_parse_fadt(struct
 
 	fadt = (struct acpi_table_fadt *)fadt_header;
 
-	acpi_register_gsi(fadt->sci_interrupt, ACPI_LEVEL_SENSITIVE, ACPI_ACTIVE_LOW);
+	acpi_register_gsi(NULL, fadt->sci_interrupt, ACPI_LEVEL_SENSITIVE,
+				 ACPI_ACTIVE_LOW);
 	return 0;
 }
 
Index: linux-2.6/arch/x86/include/asm/io_apic.h
===================================================================
--- linux-2.6.orig/arch/x86/include/asm/io_apic.h
+++ linux-2.6/arch/x86/include/asm/io_apic.h
@@ -154,8 +154,8 @@ extern int timer_through_8259;
 extern int io_apic_get_unique_id(int ioapic, int apic_id);
 extern int io_apic_get_version(int ioapic);
 extern int io_apic_get_redir_entries(int ioapic);
-extern int io_apic_set_pci_routing(int ioapic, int pin, int irq,
-				   int edge_level, int active_high_low);
+extern int io_apic_set_pci_routing(struct device *dev, int ioapic, int pin,
+				  int irq, int edge_level, int active_high_low);
 #endif /* CONFIG_ACPI */
 
 extern int (*ioapic_renumber_irq)(int ioapic, int irq);
Index: linux-2.6/arch/x86/include/asm/mpspec.h
===================================================================
--- linux-2.6.orig/arch/x86/include/asm/mpspec.h
+++ linux-2.6/arch/x86/include/asm/mpspec.h
@@ -72,7 +72,9 @@ extern void mp_register_ioapic(int id, u
 extern void mp_override_legacy_irq(u8 bus_irq, u8 polarity, u8 trigger,
 				   u32 gsi);
 extern void mp_config_acpi_legacy_irqs(void);
-extern int mp_register_gsi(u32 gsi, int edge_level, int active_high_low);
+struct device;
+extern int mp_register_gsi(struct device *dev, u32 gsi, int edge_level,
+				 int active_high_low);
 extern int acpi_probe_gsi(void);
 #ifdef CONFIG_X86_IO_APIC
 extern int mp_config_acpi_gsi(unsigned char number, unsigned int devfn, u8 pin,
Index: linux-2.6/arch/x86/kernel/acpi/boot.c
===================================================================
--- linux-2.6.orig/arch/x86/kernel/acpi/boot.c
+++ linux-2.6/arch/x86/kernel/acpi/boot.c
@@ -522,7 +522,7 @@ int acpi_gsi_to_irq(u32 gsi, unsigned in
  * success: return IRQ number (>=0)
  * failure: return < 0
  */
-int acpi_register_gsi(u32 gsi, int triggering, int polarity)
+int acpi_register_gsi(struct device *dev, u32 gsi, int triggering, int polarity)
 {
 	unsigned int irq;
 	unsigned int plat_gsi = gsi;
@@ -539,7 +539,7 @@ int acpi_register_gsi(u32 gsi, int trigg
 
 #ifdef CONFIG_X86_IO_APIC
 	if (acpi_irq_model == ACPI_IRQ_MODEL_IOAPIC) {
-		plat_gsi = mp_register_gsi(gsi, triggering, polarity);
+		plat_gsi = mp_register_gsi(dev, gsi, triggering, polarity);
 	}
 #endif
 	acpi_gsi_to_irq(plat_gsi, &irq);
@@ -1158,7 +1158,7 @@ void __init mp_config_acpi_legacy_irqs(v
 	}
 }
 
-int mp_register_gsi(u32 gsi, int triggering, int polarity)
+int mp_register_gsi(struct device *dev, u32 gsi, int triggering, int polarity)
 {
 	int ioapic;
 	int ioapic_pin;
@@ -1253,7 +1253,7 @@ int mp_register_gsi(u32 gsi, int trigger
 		}
 	}
 #endif
-	io_apic_set_pci_routing(ioapic, ioapic_pin, gsi,
+	io_apic_set_pci_routing(dev, ioapic, ioapic_pin, gsi,
 				triggering == ACPI_EDGE_SENSITIVE ? 0 : 1,
 				polarity == ACPI_ACTIVE_HIGH ? 0 : 1);
 	return gsi;
Index: linux-2.6/arch/x86/kernel/apic/io_apic.c
===================================================================
--- linux-2.6.orig/arch/x86/kernel/apic/io_apic.c
+++ linux-2.6/arch/x86/kernel/apic/io_apic.c
@@ -3851,7 +3851,8 @@ int __init io_apic_get_version(int ioapi
 }
 #endif
 
-int io_apic_set_pci_routing (int ioapic, int pin, int irq, int triggering, int polarity)
+int io_apic_set_pci_routing(struct device *dev, int ioapic, int pin, int irq,
+				 int triggering, int polarity)
 {
 	struct irq_desc *desc;
 	struct irq_cfg *cfg;
Index: linux-2.6/drivers/acpi/pci_irq.c
===================================================================
--- linux-2.6.orig/drivers/acpi/pci_irq.c
+++ linux-2.6/drivers/acpi/pci_irq.c
@@ -401,7 +401,8 @@ int acpi_pci_irq_enable(struct pci_dev *
 		/* Interrupt Line values above 0xF are forbidden */
 		if (dev->irq > 0 && (dev->irq <= 0xF)) {
 			printk(" - using IRQ %d\n", dev->irq);
-			acpi_register_gsi(dev->irq, ACPI_LEVEL_SENSITIVE,
+			acpi_register_gsi(&dev->dev, dev->irq,
+					  ACPI_LEVEL_SENSITIVE,
 					  ACPI_ACTIVE_LOW);
 			return 0;
 		} else {
@@ -410,7 +411,7 @@ int acpi_pci_irq_enable(struct pci_dev *
 		}
 	}
 
-	rc = acpi_register_gsi(gsi, triggering, polarity);
+	rc = acpi_register_gsi(&dev->dev, gsi, triggering, polarity);
 	if (rc < 0) {
 		dev_warn(&dev->dev, "PCI INT %c: failed to register GSI\n",
 			 pin_name(pin));
Index: linux-2.6/drivers/char/hpet.c
===================================================================
--- linux-2.6.orig/drivers/char/hpet.c
+++ linux-2.6/drivers/char/hpet.c
@@ -224,7 +224,7 @@ static void hpet_timer_set_irq(struct hp
 			break;
 		}
 
-		gsi = acpi_register_gsi(irq, ACPI_LEVEL_SENSITIVE,
+		gsi = acpi_register_gsi(NULL, irq, ACPI_LEVEL_SENSITIVE,
 					ACPI_ACTIVE_LOW);
 		if (gsi > 0)
 			break;
@@ -939,7 +939,7 @@ static acpi_status hpet_resources(struct
 		irqp = &res->data.extended_irq;
 
 		for (i = 0; i < irqp->interrupt_count; i++) {
-			irq = acpi_register_gsi(irqp->interrupts[i],
+			irq = acpi_register_gsi(NULL, irqp->interrupts[i],
 				      irqp->triggering, irqp->polarity);
 			if (irq < 0)
 				return AE_ERROR;
Index: linux-2.6/drivers/pnp/pnpacpi/rsparser.c
===================================================================
--- linux-2.6.orig/drivers/pnp/pnpacpi/rsparser.c
+++ linux-2.6/drivers/pnp/pnpacpi/rsparser.c
@@ -123,7 +123,7 @@ static void pnpacpi_parse_allocated_irqr
 	}
 
 	flags = irq_flags(triggering, polarity, shareable);
-	irq = acpi_register_gsi(gsi, triggering, polarity);
+	irq = acpi_register_gsi(&dev->dev, gsi, triggering, polarity);
 	if (irq >= 0)
 		pcibios_penalize_isa_irq(irq, 1);
 	else
Index: linux-2.6/include/linux/acpi.h
===================================================================
--- linux-2.6.orig/include/linux/acpi.h
+++ linux-2.6/include/linux/acpi.h
@@ -118,7 +118,7 @@ extern int pci_mmcfg_config_num;
 extern int sbf_port;
 extern unsigned long acpi_realmode_flags;
 
-int acpi_register_gsi (u32 gsi, int triggering, int polarity);
+int acpi_register_gsi (struct device *dev, u32 gsi, int triggering, int polarity);
 int acpi_gsi_to_irq (u32 gsi, unsigned int *irq);
 
 #ifdef CONFIG_X86_IO_APIC

Re: [PATCH 6/9] irq: make io_apic_set_pci_routing to take device

[Len Brown]

re: touching ACPI files in this patch with no material effect

Acked-by: Len Brown <len.brown@intel.com>

[PATCH] x86/acpi: remove compress irq trick for 32bit

[Yinghai Lu]

We already have per cpu vector for 32bit, and don't need this trick any more.

on 3 ioapic system (24 per ioapic) before patch got
ACPI: PCI Interrupt Link [ILSB] enabled at IRQ 71
IOAPIC[2]: Set routing entry (10-23 -> 0xa9 -> IRQ 64 Mode:1 Active:1)
pci 0000:80:01.1: PCI INT A -> Link[ILSB] -> GSI 71 (level, low) -> IRQ 64
ACPI: PCI Interrupt Link [LE5B] enabled at IRQ 67
IOAPIC[2]: Set routing entry (10-19 -> 0xb1 -> IRQ 65 Mode:1 Active:1)
pci 0000:83:00.0: PCI INT B -> Link[LE5B] -> GSI 67 (level, low) -> IRQ 65
ACPI: PCI Interrupt Link [LE5A] enabled at IRQ 66
IOAPIC[2]: Set routing entry (10-18 -> 0xb9 -> IRQ 66 Mode:1 Active:1)
pci 0000:83:00.1: PCI INT A -> Link[LE5A] -> GSI 66 (level, low) -> IRQ 66
ACPI: PCI Interrupt Link [LE5D] enabled at IRQ 65
IOAPIC[2]: Set routing entry (10-17 -> 0xc1 -> IRQ 67 Mode:1 Active:1)
pci 0000:84:00.0: PCI INT B -> Link[LE5D] -> GSI 65 (level, low) -> IRQ 67
ACPI: PCI Interrupt Link [LE5C] enabled at IRQ 64
IOAPIC[2]: Set routing entry (10-16 -> 0xc9 -> IRQ 68 Mode:1 Active:1)
pci 0000:84:00.1: PCI INT A -> Link[LE5C] -> GSI 64 (level, low) -> IRQ 68
pci 0000:87:00.0: PCI INT B -> Link[LE5A] -> GSI 66 (level, low) -> IRQ 66
pci 0000:87:00.1: PCI INT A -> Link[LE5D] -> GSI 65 (level, low) -> IRQ 67
pci 0000:88:00.0: PCI INT B -> Link[LE5C] -> GSI 64 (level, low) -> IRQ 68
pci 0000:88:00.1: PCI INT A -> Link[LE5B] -> GSI 67 (level, low) -> IRQ 65
pci 0000:8b:00.0: PCI INT B -> Link[LE5A] -> GSI 66 (level, low) -> IRQ 66
pci 0000:8b:00.1: PCI INT A -> Link[LE5D] -> GSI 65 (level, low) -> IRQ 67
pci 0000:8c:00.0: PCI INT B -> Link[LE5C] -> GSI 64 (level, low) -> IRQ 68
pci 0000:8c:00.1: PCI INT A -> Link[LE5B] -> GSI 67 (level, low) -> IRQ 65

after patch will get
ACPI: PCI Interrupt Link [ILSB] enabled at IRQ 71
IOAPIC[2]: Set routing entry (10-23 -> 0xa9 -> IRQ 71 Mode:1 Active:1)
pci 0000:80:01.1: PCI INT A -> Link[ILSB] -> GSI 71 (level, low) -> IRQ 71
ACPI: PCI Interrupt Link [LE5B] enabled at IRQ 67
IOAPIC[2]: Set routing entry (10-19 -> 0xb1 -> IRQ 67 Mode:1 Active:1)
pci 0000:83:00.0: PCI INT B -> Link[LE5B] -> GSI 67 (level, low) -> IRQ 67
ACPI: PCI Interrupt Link [LE5A] enabled at IRQ 66
IOAPIC[2]: Set routing entry (10-18 -> 0xb9 -> IRQ 66 Mode:1 Active:1)
pci 0000:83:00.1: PCI INT A -> Link[LE5A] -> GSI 66 (level, low) -> IRQ 66
ACPI: PCI Interrupt Link [LE5D] enabled at IRQ 65
IOAPIC[2]: Set routing entry (10-17 -> 0xc1 -> IRQ 65 Mode:1 Active:1)
pci 0000:84:00.0: PCI INT B -> Link[LE5D] -> GSI 65 (level, low) -> IRQ 65
ACPI: PCI Interrupt Link [LE5C] enabled at IRQ 64
IOAPIC[2]: Set routing entry (10-16 -> 0xc9 -> IRQ 64 Mode:1 Active:1)
pci 0000:84:00.1: PCI INT A -> Link[LE5C] -> GSI 64 (level, low) -> IRQ 64
pci 0000:87:00.0: PCI INT B -> Link[LE5A] -> GSI 66 (level, low) -> IRQ 66
pci 0000:87:00.1: PCI INT A -> Link[LE5D] -> GSI 65 (level, low) -> IRQ 65
pci 0000:88:00.0: PCI INT B -> Link[LE5C] -> GSI 64 (level, low) -> IRQ 64
pci 0000:88:00.1: PCI INT A -> Link[LE5B] -> GSI 67 (level, low) -> IRQ 67
pci 0000:8b:00.0: PCI INT B -> Link[LE5A] -> GSI 66 (level, low) -> IRQ 66
pci 0000:8b:00.1: PCI INT A -> Link[LE5D] -> GSI 65 (level, low) -> IRQ 65
pci 0000:8c:00.0: PCI INT B -> Link[LE5C] -> GSI 64 (level, low) -> IRQ 64
pci 0000:8c:00.1: PCI INT A -> Link[LE5B] -> GSI 67 (level, low) -> IRQ 67

[ Impact: make irq = gsi on 32bit system with more ioapics ]

Signed-off-by: Yinghai Lu <yinghai@kernel.org>

---
 arch/x86/kernel/acpi/boot.c |   65 ++++----------------------------------------
 1 file changed, 7 insertions(+), 58 deletions(-)

Index: linux-2.6/arch/x86/kernel/acpi/boot.c
===================================================================
--- linux-2.6.orig/arch/x86/kernel/acpi/boot.c
+++ linux-2.6/arch/x86/kernel/acpi/boot.c
@@ -1162,22 +1162,9 @@ int mp_register_gsi(struct device *dev,
 {
 	int ioapic;
 	int ioapic_pin;
-#ifdef CONFIG_X86_32
-#define MAX_GSI_NUM	4096
-#define IRQ_COMPRESSION_START	64
-
-	static int pci_irq = IRQ_COMPRESSION_START;
-	/*
-	 * Mapping between Global System Interrupts, which
-	 * represent all possible interrupts, and IRQs
-	 * assigned to actual devices.
-	 */
-	static int gsi_to_irq[MAX_GSI_NUM];
-#else
 
 	if (acpi_irq_model != ACPI_IRQ_MODEL_IOAPIC)
 		return gsi;
-#endif
 
 	/* Don't set up the ACPI SCI because it's already set up */
 	if (acpi_gbl_FADT.sci_interrupt == gsi)
@@ -1196,66 +1183,28 @@ int mp_register_gsi(struct device *dev,
 		gsi = ioapic_renumber_irq(ioapic, gsi);
 #endif
 
-	/*
-	 * Avoid pin reprogramming.  PRTs typically include entries
-	 * with redundant pin->gsi mappings (but unique PCI devices);
-	 * we only program the IOAPIC on the first.
-	 */
 	if (ioapic_pin > MP_MAX_IOAPIC_PIN) {
 		printk(KERN_ERR "Invalid reference to IOAPIC pin "
 		       "%d-%d\n", mp_ioapic_routing[ioapic].apic_id,
 		       ioapic_pin);
 		return gsi;
 	}
+
+	/*
+	 * Avoid pin reprogramming.  PRTs typically include entries
+	 * with redundant pin->gsi mappings (but unique PCI devices);
+	 * we only program the IOAPIC on the first.
+	 */
 	if (test_bit(ioapic_pin, mp_ioapic_routing[ioapic].pin_programmed)) {
 		pr_debug("Pin %d-%d already programmed\n",
 			 mp_ioapic_routing[ioapic].apic_id, ioapic_pin);
-#ifdef CONFIG_X86_32
-		return (gsi < IRQ_COMPRESSION_START ? gsi : gsi_to_irq[gsi]);
-#else
 		return gsi;
-#endif
 	}
-
 	set_bit(ioapic_pin, mp_ioapic_routing[ioapic].pin_programmed);
-#ifdef CONFIG_X86_32
-	/*
-	 * For GSI >= 64, use IRQ compression
-	 */
-	if ((gsi >= IRQ_COMPRESSION_START)
-	    && (triggering == ACPI_LEVEL_SENSITIVE)) {
-		/*
-		 * For PCI devices assign IRQs in order, avoiding gaps
-		 * due to unused I/O APIC pins.
-		 */
-		int irq = gsi;
-		if (gsi < MAX_GSI_NUM) {
-			/*
-			 * Retain the VIA chipset work-around (gsi > 15), but
-			 * avoid a problem where the 8254 timer (IRQ0) is setup
-			 * via an override (so it's not on pin 0 of the ioapic),
-			 * and at the same time, the pin 0 interrupt is a PCI
-			 * type.  The gsi > 15 test could cause these two pins
-			 * to be shared as IRQ0, and they are not shareable.
-			 * So test for this condition, and if necessary, avoid
-			 * the pin collision.
-			 */
-			gsi = pci_irq++;
-			/*
-			 * Don't assign IRQ used by ACPI SCI
-			 */
-			if (gsi == acpi_gbl_FADT.sci_interrupt)
-				gsi = pci_irq++;
-			gsi_to_irq[irq] = gsi;
-		} else {
-			printk(KERN_ERR "GSI %u is too high\n", gsi);
-			return gsi;
-		}
-	}
-#endif
 	io_apic_set_pci_routing(dev, ioapic, ioapic_pin, gsi,
 				triggering == ACPI_EDGE_SENSITIVE ? 0 : 1,
 				polarity == ACPI_ACTIVE_HIGH ? 0 : 1);
+
 	return gsi;
 }
 

[PATCH] x86/acpi: calling mp_config_acpi_gsi in mp_register_gsi

[Yinghai Lu]

it seems that change about calling mp_config_acpi_gsi in acpi_pci_irq_enable()
never get into mainline.

actually we could call that in mp_register_gsi with struct device...
also could make mp_config_acpi_gsi to be static

[Impact: make update_mptable working]

Signed-off-by: Yinghai Lu <yinghai@kernel.org>

---
 arch/x86/include/asm/mpspec.h |    9 ------
 arch/x86/kernel/acpi/boot.c   |   62 ++++++++++++++++++++++++------------------
 2 files changed, 36 insertions(+), 35 deletions(-)

Index: linux-2.6/arch/x86/include/asm/mpspec.h
===================================================================
--- linux-2.6.orig/arch/x86/include/asm/mpspec.h
+++ linux-2.6/arch/x86/include/asm/mpspec.h
@@ -77,17 +77,8 @@ extern int mp_register_gsi(struct device
 				 int active_high_low);
 extern int acpi_probe_gsi(void);
 #ifdef CONFIG_X86_IO_APIC
-extern int mp_config_acpi_gsi(unsigned char number, unsigned int devfn, u8 pin,
-				u32 gsi, int triggering, int polarity);
 extern int mp_find_ioapic(int gsi);
 extern int mp_find_ioapic_pin(int ioapic, int gsi);
-#else
-static inline int
-mp_config_acpi_gsi(unsigned char number, unsigned int devfn, u8 pin,
-		   u32 gsi, int triggering, int polarity)
-{
-	return 0;
-}
 #endif
 #else /* !CONFIG_ACPI: */
 static inline int acpi_probe_gsi(void)
Index: linux-2.6/arch/x86/kernel/acpi/boot.c
===================================================================
--- linux-2.6.orig/arch/x86/kernel/acpi/boot.c
+++ linux-2.6/arch/x86/kernel/acpi/boot.c
@@ -33,6 +33,7 @@
 #include <linux/irq.h>
 #include <linux/bootmem.h>
 #include <linux/ioport.h>
+#include <linux/pci.h>
 
 #include <asm/pgtable.h>
 #include <asm/io_apic.h>
@@ -1158,6 +1159,40 @@ void __init mp_config_acpi_legacy_irqs(v
 	}
 }
 
+static int mp_config_acpi_gsi(struct device *dev, u32 gsi, int triggering,
+			int polarity)
+{
+#ifdef CONFIG_X86_MPPARSE
+	struct mpc_intsrc mp_irq;
+	struct pci_dev *pdev;
+	unsigned char number;
+	unsigned int devfn;
+	int ioapic;
+	u8 pin;
+
+	if (!acpi_ioapic)
+		return 0;
+
+	pdev = to_pci_dev(dev);
+	number = pdev->bus->number;
+	devfn = pdev->devfn;
+	pin = pdev->pin;
+	/* print the entry should happen on mptable identically */
+	mp_irq.type = MP_INTSRC;
+	mp_irq.irqtype = mp_INT;
+	mp_irq.irqflag = (triggering == ACPI_EDGE_SENSITIVE ? 4 : 0x0c) |
+				(polarity == ACPI_ACTIVE_HIGH ? 1 : 3);
+	mp_irq.srcbus = number;
+	mp_irq.srcbusirq = (((devfn >> 3) & 0x1f) << 2) | ((pin - 1) & 3);
+	ioapic = mp_find_ioapic(gsi);
+	mp_irq.dstapic = mp_ioapic_routing[ioapic].apic_id;
+	mp_irq.dstirq = mp_find_ioapic_pin(ioapic, gsi);
+
+	save_mp_irq(&mp_irq);
+#endif
+	return 0;
+}
+
 int mp_register_gsi(struct device *dev, u32 gsi, int triggering, int polarity)
 {
 	int ioapic;
@@ -1189,6 +1224,7 @@ int mp_register_gsi(struct device *dev,
 		       ioapic_pin);
 		return gsi;
 	}
+	mp_config_acpi_gsi(dev, gsi, triggering, polarity);
 
 	/*
 	 * Avoid pin reprogramming.  PRTs typically include entries
@@ -1208,32 +1244,6 @@ int mp_register_gsi(struct device *dev,
 	return gsi;
 }
 
-int mp_config_acpi_gsi(unsigned char number, unsigned int devfn, u8 pin,
-			u32 gsi, int triggering, int polarity)
-{
-#ifdef CONFIG_X86_MPPARSE
-	struct mpc_intsrc mp_irq;
-	int ioapic;
-
-	if (!acpi_ioapic)
-		return 0;
-
-	/* print the entry should happen on mptable identically */
-	mp_irq.type = MP_INTSRC;
-	mp_irq.irqtype = mp_INT;
-	mp_irq.irqflag = (triggering == ACPI_EDGE_SENSITIVE ? 4 : 0x0c) |
-				(polarity == ACPI_ACTIVE_HIGH ? 1 : 3);
-	mp_irq.srcbus = number;
-	mp_irq.srcbusirq = (((devfn >> 3) & 0x1f) << 2) | ((pin - 1) & 3);
-	ioapic = mp_find_ioapic(gsi);
-	mp_irq.dstapic = mp_ioapic_routing[ioapic].apic_id;
-	mp_irq.dstirq = mp_find_ioapic_pin(ioapic, gsi);
-
-	save_mp_irq(&mp_irq);
-#endif
-	return 0;
-}
-
 /*
  * Parse IOAPIC related entries in MADT
  * returns 0 on success, < 0 on error

Re: [PATCH] x86/acpi: calling mp_config_acpi_gsi in mp_register_gsi

[Yinghai Lu]

it seems it still have some problem. will have -v2.

YH

Yinghai Lu wrote:
> it seems that change about calling mp_config_acpi_gsi in acpi_pci_irq_enable()
> never get into mainline.
> 
> actually we could call that in mp_register_gsi with struct device...
> also could make mp_config_acpi_gsi to be static
> 
> [Impact: make update_mptable working]
> 
> Signed-off-by: Yinghai Lu <yinghai@kernel.org>
> 
> ---
>  arch/x86/include/asm/mpspec.h |    9 ------
>  arch/x86/kernel/acpi/boot.c   |   62 ++++++++++++++++++++++++------------------
>  2 files changed, 36 insertions(+), 35 deletions(-)
> 
> Index: linux-2.6/arch/x86/include/asm/mpspec.h
> ===================================================================
> --- linux-2.6.orig/arch/x86/include/asm/mpspec.h
> +++ linux-2.6/arch/x86/include/asm/mpspec.h
> @@ -77,17 +77,8 @@ extern int mp_register_gsi(struct device
>  				 int active_high_low);
>  extern int acpi_probe_gsi(void);
>  #ifdef CONFIG_X86_IO_APIC
> -extern int mp_config_acpi_gsi(unsigned char number, unsigned int devfn, u8 pin,
> -				u32 gsi, int triggering, int polarity);
>  extern int mp_find_ioapic(int gsi);
>  extern int mp_find_ioapic_pin(int ioapic, int gsi);
> -#else
> -static inline int
> -mp_config_acpi_gsi(unsigned char number, unsigned int devfn, u8 pin,
> -		   u32 gsi, int triggering, int polarity)
> -{
> -	return 0;
> -}
>  #endif
>  #else /* !CONFIG_ACPI: */
>  static inline int acpi_probe_gsi(void)
> Index: linux-2.6/arch/x86/kernel/acpi/boot.c
> ===================================================================
> --- linux-2.6.orig/arch/x86/kernel/acpi/boot.c
> +++ linux-2.6/arch/x86/kernel/acpi/boot.c
> @@ -33,6 +33,7 @@
>  #include <linux/irq.h>
>  #include <linux/bootmem.h>
>  #include <linux/ioport.h>
> +#include <linux/pci.h>
>  
>  #include <asm/pgtable.h>
>  #include <asm/io_apic.h>
> @@ -1158,6 +1159,40 @@ void __init mp_config_acpi_legacy_irqs(v
>  	}
>  }
>  
> +static int mp_config_acpi_gsi(struct device *dev, u32 gsi, int triggering,
> +			int polarity)
> +{
> +#ifdef CONFIG_X86_MPPARSE
> +	struct mpc_intsrc mp_irq;
> +	struct pci_dev *pdev;
> +	unsigned char number;
> +	unsigned int devfn;
> +	int ioapic;
> +	u8 pin;
> +
> +	if (!acpi_ioapic)
> +		return 0;
> +
> +	pdev = to_pci_dev(dev);
> +	number = pdev->bus->number;
> +	devfn = pdev->devfn;
> +	pin = pdev->pin;
> +	/* print the entry should happen on mptable identically */
> +	mp_irq.type = MP_INTSRC;
> +	mp_irq.irqtype = mp_INT;
> +	mp_irq.irqflag = (triggering == ACPI_EDGE_SENSITIVE ? 4 : 0x0c) |
> +				(polarity == ACPI_ACTIVE_HIGH ? 1 : 3);
> +	mp_irq.srcbus = number;
> +	mp_irq.srcbusirq = (((devfn >> 3) & 0x1f) << 2) | ((pin - 1) & 3);
> +	ioapic = mp_find_ioapic(gsi);
> +	mp_irq.dstapic = mp_ioapic_routing[ioapic].apic_id;
> +	mp_irq.dstirq = mp_find_ioapic_pin(ioapic, gsi);
> +
> +	save_mp_irq(&mp_irq);
> +#endif
> +	return 0;
> +}
> +
>  int mp_register_gsi(struct device *dev, u32 gsi, int triggering, int polarity)
>  {
>  	int ioapic;
> @@ -1189,6 +1224,7 @@ int mp_register_gsi(struct device *dev,
>  		       ioapic_pin);
>  		return gsi;
>  	}
> +	mp_config_acpi_gsi(dev, gsi, triggering, polarity);
>  
>  	/*
>  	 * Avoid pin reprogramming.  PRTs typically include entries
> @@ -1208,32 +1244,6 @@ int mp_register_gsi(struct device *dev,
>  	return gsi;
>  }
>  
> -int mp_config_acpi_gsi(unsigned char number, unsigned int devfn, u8 pin,
> -			u32 gsi, int triggering, int polarity)
> -{
> -#ifdef CONFIG_X86_MPPARSE
> -	struct mpc_intsrc mp_irq;
> -	int ioapic;
> -
> -	if (!acpi_ioapic)
> -		return 0;
> -
> -	/* print the entry should happen on mptable identically */
> -	mp_irq.type = MP_INTSRC;
> -	mp_irq.irqtype = mp_INT;
> -	mp_irq.irqflag = (triggering == ACPI_EDGE_SENSITIVE ? 4 : 0x0c) |
> -				(polarity == ACPI_ACTIVE_HIGH ? 1 : 3);
> -	mp_irq.srcbus = number;
> -	mp_irq.srcbusirq = (((devfn >> 3) & 0x1f) << 2) | ((pin - 1) & 3);
> -	ioapic = mp_find_ioapic(gsi);
> -	mp_irq.dstapic = mp_ioapic_routing[ioapic].apic_id;
> -	mp_irq.dstirq = mp_find_ioapic_pin(ioapic, gsi);
> -
> -	save_mp_irq(&mp_irq);
> -#endif
> -	return 0;
> -}
> -
>  /*
>   * Parse IOAPIC related entries in MADT
>   * returns 0 on success, < 0 on error
> 

[PATCH] x86/acpi: calling mp_config_acpi_gsi in mp_register_gsi -v2

[Yinghai Lu]

it seems that change about calling mp_config_acpi_gsi in acpi_pci_irq_enable()
never get into mainline.

actually we could call that in mp_register_gsi with struct device...
also could make mp_config_acpi_gsi to be static

v2: some calling could have to be pci device, need to check that

[Impact: make update_mptable working]

Signed-off-by: Yinghai Lu <yinghai@kernel.org>

---
 arch/x86/include/asm/mpspec.h |    9 -----
 arch/x86/kernel/acpi/boot.c   |   66 +++++++++++++++++++++++++-----------------
 2 files changed, 40 insertions(+), 35 deletions(-)

Index: linux-2.6/arch/x86/include/asm/mpspec.h
===================================================================
--- linux-2.6.orig/arch/x86/include/asm/mpspec.h
+++ linux-2.6/arch/x86/include/asm/mpspec.h
@@ -77,17 +77,8 @@ extern int mp_register_gsi(struct device
 				 int active_high_low);
 extern int acpi_probe_gsi(void);
 #ifdef CONFIG_X86_IO_APIC
-extern int mp_config_acpi_gsi(unsigned char number, unsigned int devfn, u8 pin,
-				u32 gsi, int triggering, int polarity);
 extern int mp_find_ioapic(int gsi);
 extern int mp_find_ioapic_pin(int ioapic, int gsi);
-#else
-static inline int
-mp_config_acpi_gsi(unsigned char number, unsigned int devfn, u8 pin,
-		   u32 gsi, int triggering, int polarity)
-{
-	return 0;
-}
 #endif
 #else /* !CONFIG_ACPI: */
 static inline int acpi_probe_gsi(void)
Index: linux-2.6/arch/x86/kernel/acpi/boot.c
===================================================================
--- linux-2.6.orig/arch/x86/kernel/acpi/boot.c
+++ linux-2.6/arch/x86/kernel/acpi/boot.c
@@ -33,6 +33,7 @@
 #include <linux/irq.h>
 #include <linux/bootmem.h>
 #include <linux/ioport.h>
+#include <linux/pci.h>
 
 #include <asm/pgtable.h>
 #include <asm/io_apic.h>
@@ -1158,6 +1159,44 @@ void __init mp_config_acpi_legacy_irqs(v
 	}
 }
 
+static int mp_config_acpi_gsi(struct device *dev, u32 gsi, int triggering,
+			int polarity)
+{
+#ifdef CONFIG_X86_MPPARSE
+	struct mpc_intsrc mp_irq;
+	struct pci_dev *pdev;
+	unsigned char number;
+	unsigned int devfn;
+	int ioapic;
+	u8 pin;
+
+	if (!acpi_ioapic)
+		return 0;
+	if (!dev)
+		return 0;
+	if (dev->bus != &pci_bus_type)
+		return 0;
+
+	pdev = to_pci_dev(dev);
+	number = pdev->bus->number;
+	devfn = pdev->devfn;
+	pin = pdev->pin;
+	/* print the entry should happen on mptable identically */
+	mp_irq.type = MP_INTSRC;
+	mp_irq.irqtype = mp_INT;
+	mp_irq.irqflag = (triggering == ACPI_EDGE_SENSITIVE ? 4 : 0x0c) |
+				(polarity == ACPI_ACTIVE_HIGH ? 1 : 3);
+	mp_irq.srcbus = number;
+	mp_irq.srcbusirq = (((devfn >> 3) & 0x1f) << 2) | ((pin - 1) & 3);
+	ioapic = mp_find_ioapic(gsi);
+	mp_irq.dstapic = mp_ioapic_routing[ioapic].apic_id;
+	mp_irq.dstirq = mp_find_ioapic_pin(ioapic, gsi);
+
+	save_mp_irq(&mp_irq);
+#endif
+	return 0;
+}
+
 int mp_register_gsi(struct device *dev, u32 gsi, int triggering, int polarity)
 {
 	int ioapic;
@@ -1189,6 +1228,7 @@ int mp_register_gsi(struct device *dev,
 		       ioapic_pin);
 		return gsi;
 	}
+	mp_config_acpi_gsi(dev, gsi, triggering, polarity);
 
 	/*
 	 * Avoid pin reprogramming.  PRTs typically include entries
@@ -1208,32 +1248,6 @@ int mp_register_gsi(struct device *dev,
 	return gsi;
 }
 
-int mp_config_acpi_gsi(unsigned char number, unsigned int devfn, u8 pin,
-			u32 gsi, int triggering, int polarity)
-{
-#ifdef CONFIG_X86_MPPARSE
-	struct mpc_intsrc mp_irq;
-	int ioapic;
-
-	if (!acpi_ioapic)
-		return 0;
-
-	/* print the entry should happen on mptable identically */
-	mp_irq.type = MP_INTSRC;
-	mp_irq.irqtype = mp_INT;
-	mp_irq.irqflag = (triggering == ACPI_EDGE_SENSITIVE ? 4 : 0x0c) |
-				(polarity == ACPI_ACTIVE_HIGH ? 1 : 3);
-	mp_irq.srcbus = number;
-	mp_irq.srcbusirq = (((devfn >> 3) & 0x1f) << 2) | ((pin - 1) & 3);
-	ioapic = mp_find_ioapic(gsi);
-	mp_irq.dstapic = mp_ioapic_routing[ioapic].apic_id;
-	mp_irq.dstirq = mp_find_ioapic_pin(ioapic, gsi);
-
-	save_mp_irq(&mp_irq);
-#endif
-	return 0;
-}
-
 /*
  * Parse IOAPIC related entries in MADT
  * returns 0 on success, < 0 on error

Re: [PATCH] x86/acpi: remove compress irq trick for 32bit

[Ingo Molnar]

* Yinghai Lu <yinghai@kernel.org> wrote:

> 
> We already have per cpu vector for 32bit, and don't need this trick any more.
> 
> on 3 ioapic system (24 per ioapic) before patch got
> ACPI: PCI Interrupt Link [ILSB] enabled at IRQ 71
> IOAPIC[2]: Set routing entry (10-23 -> 0xa9 -> IRQ 64 Mode:1 Active:1)
> pci 0000:80:01.1: PCI INT A -> Link[ILSB] -> GSI 71 (level, low) -> IRQ 64
> ACPI: PCI Interrupt Link [LE5B] enabled at IRQ 67
> IOAPIC[2]: Set routing entry (10-19 -> 0xb1 -> IRQ 65 Mode:1 Active:1)
> pci 0000:83:00.0: PCI INT B -> Link[LE5B] -> GSI 67 (level, low) -> IRQ 65
> ACPI: PCI Interrupt Link [LE5A] enabled at IRQ 66
> IOAPIC[2]: Set routing entry (10-18 -> 0xb9 -> IRQ 66 Mode:1 Active:1)
> pci 0000:83:00.1: PCI INT A -> Link[LE5A] -> GSI 66 (level, low) -> IRQ 66
> ACPI: PCI Interrupt Link [LE5D] enabled at IRQ 65
> IOAPIC[2]: Set routing entry (10-17 -> 0xc1 -> IRQ 67 Mode:1 Active:1)
> pci 0000:84:00.0: PCI INT B -> Link[LE5D] -> GSI 65 (level, low) -> IRQ 67
> ACPI: PCI Interrupt Link [LE5C] enabled at IRQ 64
> IOAPIC[2]: Set routing entry (10-16 -> 0xc9 -> IRQ 68 Mode:1 Active:1)
> pci 0000:84:00.1: PCI INT A -> Link[LE5C] -> GSI 64 (level, low) -> IRQ 68
> pci 0000:87:00.0: PCI INT B -> Link[LE5A] -> GSI 66 (level, low) -> IRQ 66
> pci 0000:87:00.1: PCI INT A -> Link[LE5D] -> GSI 65 (level, low) -> IRQ 67
> pci 0000:88:00.0: PCI INT B -> Link[LE5C] -> GSI 64 (level, low) -> IRQ 68
> pci 0000:88:00.1: PCI INT A -> Link[LE5B] -> GSI 67 (level, low) -> IRQ 65
> pci 0000:8b:00.0: PCI INT B -> Link[LE5A] -> GSI 66 (level, low) -> IRQ 66
> pci 0000:8b:00.1: PCI INT A -> Link[LE5D] -> GSI 65 (level, low) -> IRQ 67
> pci 0000:8c:00.0: PCI INT B -> Link[LE5C] -> GSI 64 (level, low) -> IRQ 68
> pci 0000:8c:00.1: PCI INT A -> Link[LE5B] -> GSI 67 (level, low) -> IRQ 65
> 
> after patch will get
> ACPI: PCI Interrupt Link [ILSB] enabled at IRQ 71
> IOAPIC[2]: Set routing entry (10-23 -> 0xa9 -> IRQ 71 Mode:1 Active:1)
> pci 0000:80:01.1: PCI INT A -> Link[ILSB] -> GSI 71 (level, low) -> IRQ 71
> ACPI: PCI Interrupt Link [LE5B] enabled at IRQ 67
> IOAPIC[2]: Set routing entry (10-19 -> 0xb1 -> IRQ 67 Mode:1 Active:1)
> pci 0000:83:00.0: PCI INT B -> Link[LE5B] -> GSI 67 (level, low) -> IRQ 67
> ACPI: PCI Interrupt Link [LE5A] enabled at IRQ 66
> IOAPIC[2]: Set routing entry (10-18 -> 0xb9 -> IRQ 66 Mode:1 Active:1)
> pci 0000:83:00.1: PCI INT A -> Link[LE5A] -> GSI 66 (level, low) -> IRQ 66
> ACPI: PCI Interrupt Link [LE5D] enabled at IRQ 65
> IOAPIC[2]: Set routing entry (10-17 -> 0xc1 -> IRQ 65 Mode:1 Active:1)
> pci 0000:84:00.0: PCI INT B -> Link[LE5D] -> GSI 65 (level, low) -> IRQ 65
> ACPI: PCI Interrupt Link [LE5C] enabled at IRQ 64
> IOAPIC[2]: Set routing entry (10-16 -> 0xc9 -> IRQ 64 Mode:1 Active:1)
> pci 0000:84:00.1: PCI INT A -> Link[LE5C] -> GSI 64 (level, low) -> IRQ 64
> pci 0000:87:00.0: PCI INT B -> Link[LE5A] -> GSI 66 (level, low) -> IRQ 66
> pci 0000:87:00.1: PCI INT A -> Link[LE5D] -> GSI 65 (level, low) -> IRQ 65
> pci 0000:88:00.0: PCI INT B -> Link[LE5C] -> GSI 64 (level, low) -> IRQ 64
> pci 0000:88:00.1: PCI INT A -> Link[LE5B] -> GSI 67 (level, low) -> IRQ 67
> pci 0000:8b:00.0: PCI INT B -> Link[LE5A] -> GSI 66 (level, low) -> IRQ 66
> pci 0000:8b:00.1: PCI INT A -> Link[LE5D] -> GSI 65 (level, low) -> IRQ 65
> pci 0000:8c:00.0: PCI INT B -> Link[LE5C] -> GSI 64 (level, low) -> IRQ 64
> pci 0000:8c:00.1: PCI INT A -> Link[LE5B] -> GSI 67 (level, low) -> IRQ 67
> 
> [ Impact: make irq = gsi on 32bit system with more ioapics ]
> 
> Signed-off-by: Yinghai Lu <yinghai@kernel.org>
> 
> ---
>  arch/x86/kernel/acpi/boot.c |   65 ++++----------------------------------------
>  1 file changed, 7 insertions(+), 58 deletions(-)
> 
> Index: linux-2.6/arch/x86/kernel/acpi/boot.c
> ===================================================================
> --- linux-2.6.orig/arch/x86/kernel/acpi/boot.c
> +++ linux-2.6/arch/x86/kernel/acpi/boot.c
> @@ -1162,22 +1162,9 @@ int mp_register_gsi(struct device *dev,
>  {
>  	int ioapic;
>  	int ioapic_pin;
> -#ifdef CONFIG_X86_32
> -#define MAX_GSI_NUM	4096
> -#define IRQ_COMPRESSION_START	64
> -
> -	static int pci_irq = IRQ_COMPRESSION_START;
> -	/*
> -	 * Mapping between Global System Interrupts, which
> -	 * represent all possible interrupts, and IRQs
> -	 * assigned to actual devices.
> -	 */
> -	static int gsi_to_irq[MAX_GSI_NUM];
> -#else
>  
>  	if (acpi_irq_model != ACPI_IRQ_MODEL_IOAPIC)
>  		return gsi;
> -#endif
>  
>  	/* Don't set up the ACPI SCI because it's already set up */
>  	if (acpi_gbl_FADT.sci_interrupt == gsi)
> @@ -1196,66 +1183,28 @@ int mp_register_gsi(struct device *dev,
>  		gsi = ioapic_renumber_irq(ioapic, gsi);
>  #endif
>  
> -	/*
> -	 * Avoid pin reprogramming.  PRTs typically include entries
> -	 * with redundant pin->gsi mappings (but unique PCI devices);
> -	 * we only program the IOAPIC on the first.
> -	 */
>  	if (ioapic_pin > MP_MAX_IOAPIC_PIN) {
>  		printk(KERN_ERR "Invalid reference to IOAPIC pin "
>  		       "%d-%d\n", mp_ioapic_routing[ioapic].apic_id,
>  		       ioapic_pin);
>  		return gsi;
>  	}
> +
> +	/*
> +	 * Avoid pin reprogramming.  PRTs typically include entries
> +	 * with redundant pin->gsi mappings (but unique PCI devices);
> +	 * we only program the IOAPIC on the first.
> +	 */
>  	if (test_bit(ioapic_pin, mp_ioapic_routing[ioapic].pin_programmed)) {
>  		pr_debug("Pin %d-%d already programmed\n",
>  			 mp_ioapic_routing[ioapic].apic_id, ioapic_pin);
> -#ifdef CONFIG_X86_32
> -		return (gsi < IRQ_COMPRESSION_START ? gsi : gsi_to_irq[gsi]);
> -#else
>  		return gsi;
> -#endif
>  	}
> -
>  	set_bit(ioapic_pin, mp_ioapic_routing[ioapic].pin_programmed);
> -#ifdef CONFIG_X86_32
> -	/*
> -	 * For GSI >= 64, use IRQ compression
> -	 */
> -	if ((gsi >= IRQ_COMPRESSION_START)
> -	    && (triggering == ACPI_LEVEL_SENSITIVE)) {
> -		/*
> -		 * For PCI devices assign IRQs in order, avoiding gaps
> -		 * due to unused I/O APIC pins.
> -		 */
> -		int irq = gsi;
> -		if (gsi < MAX_GSI_NUM) {
> -			/*
> -			 * Retain the VIA chipset work-around (gsi > 15), but
> -			 * avoid a problem where the 8254 timer (IRQ0) is setup
> -			 * via an override (so it's not on pin 0 of the ioapic),
> -			 * and at the same time, the pin 0 interrupt is a PCI
> -			 * type.  The gsi > 15 test could cause these two pins
> -			 * to be shared as IRQ0, and they are not shareable.
> -			 * So test for this condition, and if necessary, avoid
> -			 * the pin collision.
> -			 */
> -			gsi = pci_irq++;
> -			/*
> -			 * Don't assign IRQ used by ACPI SCI
> -			 */
> -			if (gsi == acpi_gbl_FADT.sci_interrupt)
> -				gsi = pci_irq++;
> -			gsi_to_irq[irq] = gsi;
> -		} else {
> -			printk(KERN_ERR "GSI %u is too high\n", gsi);
> -			return gsi;
> -		}
> -	}
> -#endif
>  	io_apic_set_pci_routing(dev, ioapic, ioapic_pin, gsi,
>  				triggering == ACPI_EDGE_SENSITIVE ? 0 : 1,
>  				polarity == ACPI_ACTIVE_HIGH ? 0 : 1);
> +
>  	return gsi;
>  }
>  

Nice!

  Acked-by: Ingo Molnar <mingo@elte.hu>

Len, any preference about which tree should carry this?

	Ingo

Re: [PATCH] x86/acpi: remove compress irq trick for 32bit

[Len Brown]

Yinghai,
I'm really happy to see this workaround finally get removed.

Acked-by: Len Brown <len.brown@intel.com>

Ingo,
go ahead and keep this with your irq patches.

thanks,
Len Brown, Intel Open Source Technology Center

Re: [PATCH] x86/acpi: remove compress irq trick for 32bit

[Ingo Molnar]

* Len Brown <lenb@kernel.org> wrote:

> Yinghai,
> I'm really happy to see this workaround finally get removed.
> 
> Acked-by: Len Brown <len.brown@intel.com>
> 
> Ingo,
> go ahead and keep this with your irq patches.

thanks Len!

	Ingo

[PATCH 6/9] irq: make io_apic_set_pci_routing to take device

[Yinghai Lu]

Impact: so use dev_to_node later

Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Cc: linux-acpi@vger.kernel.org
Acked-by: Len Brown <lenb@kernel.org>
Cc: Bjorn Helgaas <bjorn.helgaas@hp.com>
Cc: linux-ia64@vger.kernel.org
Cc: Tony Luck <tony.luck@intel.com>

---
 arch/ia64/kernel/acpi.c        |    5 +++--
 arch/x86/include/asm/io_apic.h |    4 ++--
 arch/x86/include/asm/mpspec.h  |    4 +++-
 arch/x86/kernel/acpi/boot.c    |    8 ++++----
 arch/x86/kernel/apic/io_apic.c |    3 ++-
 drivers/acpi/pci_irq.c         |    5 +++--
 drivers/char/hpet.c            |    4 ++--
 drivers/pnp/pnpacpi/rsparser.c |    2 +-
 include/linux/acpi.h           |    2 +-
 9 files changed, 21 insertions(+), 16 deletions(-)

Index: linux-2.6/arch/ia64/kernel/acpi.c
===================================================================
--- linux-2.6.orig/arch/ia64/kernel/acpi.c
+++ linux-2.6/arch/ia64/kernel/acpi.c
@@ -636,7 +636,7 @@ void __init acpi_numa_arch_fixup(void)
  * success: return IRQ number (>=0)
  * failure: return < 0
  */
-int acpi_register_gsi(u32 gsi, int triggering, int polarity)
+int acpi_register_gsi(struct device *dev, u32 gsi, int triggering, int polarity)
 {
 	if (acpi_irq_model == ACPI_IRQ_MODEL_PLATFORM)
 		return gsi;
@@ -678,7 +678,8 @@ static int __init acpi_parse_fadt(struct
 
 	fadt = (struct acpi_table_fadt *)fadt_header;
 
-	acpi_register_gsi(fadt->sci_interrupt, ACPI_LEVEL_SENSITIVE, ACPI_ACTIVE_LOW);
+	acpi_register_gsi(NULL, fadt->sci_interrupt, ACPI_LEVEL_SENSITIVE,
+				 ACPI_ACTIVE_LOW);
 	return 0;
 }
 
Index: linux-2.6/arch/x86/include/asm/io_apic.h
===================================================================
--- linux-2.6.orig/arch/x86/include/asm/io_apic.h
+++ linux-2.6/arch/x86/include/asm/io_apic.h
@@ -154,8 +154,8 @@ extern int timer_through_8259;
 extern int io_apic_get_unique_id(int ioapic, int apic_id);
 extern int io_apic_get_version(int ioapic);
 extern int io_apic_get_redir_entries(int ioapic);
-extern int io_apic_set_pci_routing(int ioapic, int pin, int irq,
-				   int edge_level, int active_high_low);
+extern int io_apic_set_pci_routing(struct device *dev, int ioapic, int pin,
+				  int irq, int edge_level, int active_high_low);
 #endif /* CONFIG_ACPI */
 
 extern int (*ioapic_renumber_irq)(int ioapic, int irq);
Index: linux-2.6/arch/x86/include/asm/mpspec.h
===================================================================
--- linux-2.6.orig/arch/x86/include/asm/mpspec.h
+++ linux-2.6/arch/x86/include/asm/mpspec.h
@@ -72,7 +72,9 @@ extern void mp_register_ioapic(int id, u
 extern void mp_override_legacy_irq(u8 bus_irq, u8 polarity, u8 trigger,
 				   u32 gsi);
 extern void mp_config_acpi_legacy_irqs(void);
-extern int mp_register_gsi(u32 gsi, int edge_level, int active_high_low);
+struct device;
+extern int mp_register_gsi(struct device *dev, u32 gsi, int edge_level,
+				 int active_high_low);
 extern int acpi_probe_gsi(void);
 #ifdef CONFIG_X86_IO_APIC
 extern int mp_config_acpi_gsi(unsigned char number, unsigned int devfn, u8 pin,
Index: linux-2.6/arch/x86/kernel/acpi/boot.c
===================================================================
--- linux-2.6.orig/arch/x86/kernel/acpi/boot.c
+++ linux-2.6/arch/x86/kernel/acpi/boot.c
@@ -522,7 +522,7 @@ int acpi_gsi_to_irq(u32 gsi, unsigned in
  * success: return IRQ number (>=0)
  * failure: return < 0
  */
-int acpi_register_gsi(u32 gsi, int triggering, int polarity)
+int acpi_register_gsi(struct device *dev, u32 gsi, int triggering, int polarity)
 {
 	unsigned int irq;
 	unsigned int plat_gsi = gsi;
@@ -539,7 +539,7 @@ int acpi_register_gsi(u32 gsi, int trigg
 
 #ifdef CONFIG_X86_IO_APIC
 	if (acpi_irq_model == ACPI_IRQ_MODEL_IOAPIC) {
-		plat_gsi = mp_register_gsi(gsi, triggering, polarity);
+		plat_gsi = mp_register_gsi(dev, gsi, triggering, polarity);
 	}
 #endif
 	acpi_gsi_to_irq(plat_gsi, &irq);
@@ -1158,7 +1158,7 @@ void __init mp_config_acpi_legacy_irqs(v
 	}
 }
 
-int mp_register_gsi(u32 gsi, int triggering, int polarity)
+int mp_register_gsi(struct device *dev, u32 gsi, int triggering, int polarity)
 {
 	int ioapic;
 	int ioapic_pin;
@@ -1253,7 +1253,7 @@ int mp_register_gsi(u32 gsi, int trigger
 		}
 	}
 #endif
-	io_apic_set_pci_routing(ioapic, ioapic_pin, gsi,
+	io_apic_set_pci_routing(dev, ioapic, ioapic_pin, gsi,
 				triggering == ACPI_EDGE_SENSITIVE ? 0 : 1,
 				polarity == ACPI_ACTIVE_HIGH ? 0 : 1);
 	return gsi;
Index: linux-2.6/arch/x86/kernel/apic/io_apic.c
===================================================================
--- linux-2.6.orig/arch/x86/kernel/apic/io_apic.c
+++ linux-2.6/arch/x86/kernel/apic/io_apic.c
@@ -3916,7 +3916,8 @@ int __init io_apic_get_version(int ioapi
 }
 #endif
 
-int io_apic_set_pci_routing (int ioapic, int pin, int irq, int triggering, int polarity)
+int io_apic_set_pci_routing(struct device *dev, int ioapic, int pin, int irq,
+				 int triggering, int polarity)
 {
 	struct irq_desc *desc;
 	struct irq_cfg *cfg;
Index: linux-2.6/drivers/acpi/pci_irq.c
===================================================================
--- linux-2.6.orig/drivers/acpi/pci_irq.c
+++ linux-2.6/drivers/acpi/pci_irq.c
@@ -401,7 +401,8 @@ int acpi_pci_irq_enable(struct pci_dev *
 		/* Interrupt Line values above 0xF are forbidden */
 		if (dev->irq > 0 && (dev->irq <= 0xF)) {
 			printk(" - using IRQ %d\n", dev->irq);
-			acpi_register_gsi(dev->irq, ACPI_LEVEL_SENSITIVE,
+			acpi_register_gsi(&dev->dev, dev->irq,
+					  ACPI_LEVEL_SENSITIVE,
 					  ACPI_ACTIVE_LOW);
 			return 0;
 		} else {
@@ -410,7 +411,7 @@ int acpi_pci_irq_enable(struct pci_dev *
 		}
 	}
 
-	rc = acpi_register_gsi(gsi, triggering, polarity);
+	rc = acpi_register_gsi(&dev->dev, gsi, triggering, polarity);
 	if (rc < 0) {
 		dev_warn(&dev->dev, "PCI INT %c: failed to register GSI\n",
 			 pin_name(pin));
Index: linux-2.6/drivers/char/hpet.c
===================================================================
--- linux-2.6.orig/drivers/char/hpet.c
+++ linux-2.6/drivers/char/hpet.c
@@ -224,7 +224,7 @@ static void hpet_timer_set_irq(struct hp
 			break;
 		}
 
-		gsi = acpi_register_gsi(irq, ACPI_LEVEL_SENSITIVE,
+		gsi = acpi_register_gsi(NULL, irq, ACPI_LEVEL_SENSITIVE,
 					ACPI_ACTIVE_LOW);
 		if (gsi > 0)
 			break;
@@ -939,7 +939,7 @@ static acpi_status hpet_resources(struct
 		irqp = &res->data.extended_irq;
 
 		for (i = 0; i < irqp->interrupt_count; i++) {
-			irq = acpi_register_gsi(irqp->interrupts[i],
+			irq = acpi_register_gsi(NULL, irqp->interrupts[i],
 				      irqp->triggering, irqp->polarity);
 			if (irq < 0)
 				return AE_ERROR;
Index: linux-2.6/drivers/pnp/pnpacpi/rsparser.c
===================================================================
--- linux-2.6.orig/drivers/pnp/pnpacpi/rsparser.c
+++ linux-2.6/drivers/pnp/pnpacpi/rsparser.c
@@ -123,7 +123,7 @@ static void pnpacpi_parse_allocated_irqr
 	}
 
 	flags = irq_flags(triggering, polarity, shareable);
-	irq = acpi_register_gsi(gsi, triggering, polarity);
+	irq = acpi_register_gsi(&dev->dev, gsi, triggering, polarity);
 	if (irq >= 0)
 		pcibios_penalize_isa_irq(irq, 1);
 	else
Index: linux-2.6/include/linux/acpi.h
===================================================================
--- linux-2.6.orig/include/linux/acpi.h
+++ linux-2.6/include/linux/acpi.h
@@ -119,7 +119,7 @@ extern int pci_mmcfg_config_num;
 extern int sbf_port;
 extern unsigned long acpi_realmode_flags;
 
-int acpi_register_gsi (u32 gsi, int triggering, int polarity);
+int acpi_register_gsi (struct device *dev, u32 gsi, int triggering, int polarity);
 int acpi_gsi_to_irq (u32 gsi, unsigned int *irq);
 
 #ifdef CONFIG_X86_IO_APIC